Added type "s24" for faster conversion of FSSF_S24.
Added type "s24" for faster conversion of FSSF_S24.

jcdubois/DirectFB,kaostao/directfb,deniskropp/DirectFB,kaostao/directfb,mtsekm/test,kevleyski/directfb,kevleyski/DirectFB-1,sklnet/DirectFB,deniskropp/DirectFB,djbclark/directfb-core-DirectFB,lancebaiyouview/DirectFB,kevleyski/DirectFB-1,lancebaiyouview/DirectFB,DirectFB/directfb,jcdubois/DirectFB,djbclark/directfb-core-DirectFB,Distrotech/DirectFB,dfbdok/DirectFB1,lancebaiyouview/DirectFB,djbclark/directfb-core-DirectFB,mtsekm/test,sklnet/DirectFB,jcdubois/DirectFB,Distrotech/DirectFB,deniskropp/DirectFB,kevleyski/directfb,kevleyski/directfb,sklnet/DirectFB,DirectFB/directfb,kevleyski/directfb,Distrotech/DirectFB,dfbdok/DirectFB1,kevleyski/DirectFB-1,DirectFB/directfb,dfbdok/DirectFB1,kaostao/directfb,lancebaiyouview/DirectFB,kevleyski/DirectFB-1,deniskropp/DirectFB,djbclark/directfb-core-DirectFB,mtsekm/test,sklnet/DirectFB